Home / 781,314.78-1,078,256.34-437,130.18

Finding the Fourth Proportional to 781,314.78, 1,078,256.34 and 437,130.18

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Solution

The fourth proportional to 781,314.78, 1,078,256.34 and 437,130.18 is: 603,263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,314.78 : 1,078,256.34 = 437,130.18 : x
  2. Step 2: Convert to fraction form
    781,314.78/1,078,256.34 = 437,130.18/x
  3. Step 3: Cross multiply
    781,314.78x = 1,078,256.34 × 437,130.18
  4. Step 4: Simplify right side
    781,314.78x = 471,338,387,990.34
  5. Step 5: Solve for x
    x = 471,338,387,990.34/781,314.78
  6. Step 6: Final answer
    x = 603,263.12

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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.