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Finding the Fourth Proportional to 615,212.10, 922,818.15 and 577,814.40

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Solution

The fourth proportional to 615,212.10, 922,818.15 and 577,814.40 is: 866,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,212.10 : 922,818.15 = 577,814.40 : x
  2. Step 2: Convert to fraction form
    615,212.10/922,818.15 = 577,814.40/x
  3. Step 3: Cross multiply
    615,212.10x = 922,818.15 × 577,814.40
  4. Step 4: Simplify right side
    615,212.10x = 533,217,615,651.36
  5. Step 5: Solve for x
    x = 533,217,615,651.36/615,212.10
  6. Step 6: Final answer
    x = 866,721.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.