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Finding the Fourth Proportional to 657,000.90, 985,501.35 and 376,287.30

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Solution

The fourth proportional to 657,000.90, 985,501.35 and 376,287.30 is: 564,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,000.90 : 985,501.35 = 376,287.30 : x
  2. Step 2: Convert to fraction form
    657,000.90/985,501.35 = 376,287.30/x
  3. Step 3: Cross multiply
    657,000.90x = 985,501.35 × 376,287.30
  4. Step 4: Simplify right side
    657,000.90x = 370,831,642,137.86
  5. Step 5: Solve for x
    x = 370,831,642,137.86/657,000.90
  6. Step 6: Final answer
    x = 564,430.95

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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.