Home / 880,688.59-1,215,356.48-478,280.59

Finding the Fourth Proportional to 880,688.59, 1,215,356.48 and 478,280.59

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Solution

The fourth proportional to 880,688.59, 1,215,356.48 and 478,280.59 is: 660,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,688.59 : 1,215,356.48 = 478,280.59 : x
  2. Step 2: Convert to fraction form
    880,688.59/1,215,356.48 = 478,280.59/x
  3. Step 3: Cross multiply
    880,688.59x = 1,215,356.48 × 478,280.59
  4. Step 4: Simplify right side
    880,688.59x = 581,281,414,314.72
  5. Step 5: Solve for x
    x = 581,281,414,314.72/880,688.59
  6. Step 6: Final answer
    x = 660,030.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.