Home / 948,690.30-1,309,188.70-513,108.13

Finding the Fourth Proportional to 948,690.30, 1,309,188.70 and 513,108.13

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Solution

The fourth proportional to 948,690.30, 1,309,188.70 and 513,108.13 is: 708,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,690.30 : 1,309,188.70 = 513,108.13 : x
  2. Step 2: Convert to fraction form
    948,690.30/1,309,188.70 = 513,108.13/x
  3. Step 3: Cross multiply
    948,690.30x = 1,309,188.70 × 513,108.13
  4. Step 4: Simplify right side
    948,690.30x = 671,755,365,895.20
  5. Step 5: Solve for x
    x = 671,755,365,895.20/948,690.30
  6. Step 6: Final answer
    x = 708,087.10

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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.