Home / 917,590.10-1,266,231.45-509,718.20

Finding the Fourth Proportional to 917,590.10, 1,266,231.45 and 509,718.20

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Solution

The fourth proportional to 917,590.10, 1,266,231.45 and 509,718.20 is: 703,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,590.10 : 1,266,231.45 = 509,718.20 : x
  2. Step 2: Convert to fraction form
    917,590.10/1,266,231.45 = 509,718.20/x
  3. Step 3: Cross multiply
    917,590.10x = 1,266,231.45 × 509,718.20
  4. Step 4: Simplify right side
    917,590.10x = 645,421,215,477.39
  5. Step 5: Solve for x
    x = 645,421,215,477.39/917,590.10
  6. Step 6: Final answer
    x = 703,387.29

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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.