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Finding the Fourth Proportional to 708,484.12, 977,688.60 and 386,200.52

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Solution

The fourth proportional to 708,484.12, 977,688.60 and 386,200.52 is: 532,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,484.12 : 977,688.60 = 386,200.52 : x
  2. Step 2: Convert to fraction form
    708,484.12/977,688.60 = 386,200.52/x
  3. Step 3: Cross multiply
    708,484.12x = 977,688.60 × 386,200.52
  4. Step 4: Simplify right side
    708,484.12x = 377,583,845,718.07
  5. Step 5: Solve for x
    x = 377,583,845,718.07/708,484.12
  6. Step 6: Final answer
    x = 532,946.10

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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.