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Finding the Fourth Proportional to 708,352.92, 977,513.67 and 386,065.26

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Solution

The fourth proportional to 708,352.92, 977,513.67 and 386,065.26 is: 532,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,352.92 : 977,513.67 = 386,065.26 : x
  2. Step 2: Convert to fraction form
    708,352.92/977,513.67 = 386,065.26/x
  3. Step 3: Cross multiply
    708,352.92x = 977,513.67 × 386,065.26
  4. Step 4: Simplify right side
    708,352.92x = 377,384,069,162.10
  5. Step 5: Solve for x
    x = 377,384,069,162.10/708,352.92
  6. Step 6: Final answer
    x = 532,762.78

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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.