Home / 885,403.90-1,221,830.49-498,240.91

Finding the Fourth Proportional to 885,403.90, 1,221,830.49 and 498,240.91

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Solution

The fourth proportional to 885,403.90, 1,221,830.49 and 498,240.91 is: 687,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,403.90 : 1,221,830.49 = 498,240.91 : x
  2. Step 2: Convert to fraction form
    885,403.90/1,221,830.49 = 498,240.91/x
  3. Step 3: Cross multiply
    885,403.90x = 1,221,830.49 × 498,240.91
  4. Step 4: Simplify right side
    885,403.90x = 608,765,935,203.35
  5. Step 5: Solve for x
    x = 608,765,935,203.35/885,403.90
  6. Step 6: Final answer
    x = 687,557.32

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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.