Home / 687,280.80-1,030,921.20-592,802.40

Finding the Fourth Proportional to 687,280.80, 1,030,921.20 and 592,802.40

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Solution

The fourth proportional to 687,280.80, 1,030,921.20 and 592,802.40 is: 889,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,280.80 : 1,030,921.20 = 592,802.40 : x
  2. Step 2: Convert to fraction form
    687,280.80/1,030,921.20 = 592,802.40/x
  3. Step 3: Cross multiply
    687,280.80x = 1,030,921.20 × 592,802.40
  4. Step 4: Simplify right side
    687,280.80x = 611,132,561,570.88
  5. Step 5: Solve for x
    x = 611,132,561,570.88/687,280.80
  6. Step 6: Final answer
    x = 889,203.60

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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.