Home / 877,812,947.52-1,210,209,994.15-697,358,678.76

Finding the Fourth Proportional to 877,812,947.52, 1,210,209,994.15 and 697,358,678.76

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Solution

The fourth proportional to 877,812,947.52, 1,210,209,994.15 and 697,358,678.76 is: 961,424,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,812,947.52 : 1,210,209,994.15 = 697,358,678.76 : x
  2. Step 2: Convert to fraction form
    877,812,947.52/1,210,209,994.15 = 697,358,678.76/x
  3. Step 3: Cross multiply
    877,812,947.52x = 1,210,209,994.15 × 697,358,678.76
  4. Step 4: Simplify right side
    877,812,947.52x = 843,950,442,536,540,288
  5. Step 5: Solve for x
    x = 843,950,442,536,540,288/877,812,947.52
  6. Step 6: Final answer
    x = 961,424,008.29

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Double scale
Find fourth proportional to 877,812,948.52, 1,210,209,995.53 and 697,358,679.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.