Home / 778,866.10-1,168,299.15-478,372.30

Finding the Fourth Proportional to 778,866.10, 1,168,299.15 and 478,372.30

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Solution

The fourth proportional to 778,866.10, 1,168,299.15 and 478,372.30 is: 717,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,866.10 : 1,168,299.15 = 478,372.30 : x
  2. Step 2: Convert to fraction form
    778,866.10/1,168,299.15 = 478,372.30/x
  3. Step 3: Cross multiply
    778,866.10x = 1,168,299.15 × 478,372.30
  4. Step 4: Simplify right side
    778,866.10x = 558,881,951,473.55
  5. Step 5: Solve for x
    x = 558,881,951,473.55/778,866.10
  6. Step 6: Final answer
    x = 717,558.45

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Double scale
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Similar ratio
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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.