Home / 781,848.19-1,078,890.91-437,605.28

Finding the Fourth Proportional to 781,848.19, 1,078,890.91 and 437,605.28

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Solution

The fourth proportional to 781,848.19, 1,078,890.91 and 437,605.28 is: 603,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,848.19 : 1,078,890.91 = 437,605.28 : x
  2. Step 2: Convert to fraction form
    781,848.19/1,078,890.91 = 437,605.28/x
  3. Step 3: Cross multiply
    781,848.19x = 1,078,890.91 × 437,605.28
  4. Step 4: Simplify right side
    781,848.19x = 472,128,356,317.38
  5. Step 5: Solve for x
    x = 472,128,356,317.38/781,848.19
  6. Step 6: Final answer
    x = 603,861.93

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.