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Finding the Fourth Proportional to 862,732, 1,190,430.12 and 500,085.08

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Solution

The fourth proportional to 862,732, 1,190,430.12 and 500,085.08 is: 690,036.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,732 : 1,190,430.12 = 500,085.08 : x
  2. Step 2: Convert to fraction form
    862,732/1,190,430.12 = 500,085.08/x
  3. Step 3: Cross multiply
    862,732x = 1,190,430.12 × 500,085.08
  4. Step 4: Simplify right side
    862,732x = 595,316,341,794.61
  5. Step 5: Solve for x
    x = 595,316,341,794.61/862,732
  6. Step 6: Final answer
    x = 690,036.24

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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.