Home / 865,610.10-1,194,603.75-478,417.20

Finding the Fourth Proportional to 865,610.10, 1,194,603.75 and 478,417.20

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Solution

The fourth proportional to 865,610.10, 1,194,603.75 and 478,417.20 is: 660,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,610.10 : 1,194,603.75 = 478,417.20 : x
  2. Step 2: Convert to fraction form
    865,610.10/1,194,603.75 = 478,417.20/x
  3. Step 3: Cross multiply
    865,610.10x = 1,194,603.75 × 478,417.20
  4. Step 4: Simplify right side
    865,610.10x = 571,518,981,184.50
  5. Step 5: Solve for x
    x = 571,518,981,184.50/865,610.10
  6. Step 6: Final answer
    x = 660,249.90

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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.