Home / 912,663.79-1,259,425.01-499,118.90

Finding the Fourth Proportional to 912,663.79, 1,259,425.01 and 499,118.90

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Solution

The fourth proportional to 912,663.79, 1,259,425.01 and 499,118.90 is: 688,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,663.79 : 1,259,425.01 = 499,118.90 : x
  2. Step 2: Convert to fraction form
    912,663.79/1,259,425.01 = 499,118.90/x
  3. Step 3: Cross multiply
    912,663.79x = 1,259,425.01 × 499,118.90
  4. Step 4: Simplify right side
    912,663.79x = 628,602,817,766.82
  5. Step 5: Solve for x
    x = 628,602,817,766.82/912,663.79
  6. Step 6: Final answer
    x = 688,756.17

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Double scale
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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.