Home / 858,613.40-1,287,920.10-753,637.40

Finding the Fourth Proportional to 858,613.40, 1,287,920.10 and 753,637.40

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Solution

The fourth proportional to 858,613.40, 1,287,920.10 and 753,637.40 is: 1,130,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,613.40 : 1,287,920.10 = 753,637.40 : x
  2. Step 2: Convert to fraction form
    858,613.40/1,287,920.10 = 753,637.40/x
  3. Step 3: Cross multiply
    858,613.40x = 1,287,920.10 × 753,637.40
  4. Step 4: Simplify right side
    858,613.40x = 970,624,755,571.74
  5. Step 5: Solve for x
    x = 970,624,755,571.74/858,613.40
  6. Step 6: Final answer
    x = 1,130,456.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.