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Finding the Fourth Proportional to 697,300.55, 962,281.90 and 391,370.81

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Solution

The fourth proportional to 697,300.55, 962,281.90 and 391,370.81 is: 540,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,300.55 : 962,281.90 = 391,370.81 : x
  2. Step 2: Convert to fraction form
    697,300.55/962,281.90 = 391,370.81/x
  3. Step 3: Cross multiply
    697,300.55x = 962,281.90 × 391,370.81
  4. Step 4: Simplify right side
    697,300.55x = 376,609,042,329.14
  5. Step 5: Solve for x
    x = 376,609,042,329.14/697,300.55
  6. Step 6: Final answer
    x = 540,095.72

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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.