Home / 717,895.80-990,702.89-395,617.46

Finding the Fourth Proportional to 717,895.80, 990,702.89 and 395,617.46

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Solution

The fourth proportional to 717,895.80, 990,702.89 and 395,617.46 is: 545,955.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,895.80 : 990,702.89 = 395,617.46 : x
  2. Step 2: Convert to fraction form
    717,895.80/990,702.89 = 395,617.46/x
  3. Step 3: Cross multiply
    717,895.80x = 990,702.89 × 395,617.46
  4. Step 4: Simplify right side
    717,895.80x = 391,939,354,024.86
  5. Step 5: Solve for x
    x = 391,939,354,024.86/717,895.80
  6. Step 6: Final answer
    x = 545,955.77

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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.