Home / 712,140.80-1,068,902.40-357,555.20

Finding the Fourth Proportional to 712,140.80, 1,068,902.40 and 357,555.20

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Solution

The fourth proportional to 712,140.80, 1,068,902.40 and 357,555.20 is: 536,679.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,140.80 : 1,068,902.40 = 357,555.20 : x
  2. Step 2: Convert to fraction form
    712,140.80/1,068,902.40 = 357,555.20/x
  3. Step 3: Cross multiply
    712,140.80x = 1,068,902.40 × 357,555.20
  4. Step 4: Simplify right side
    712,140.80x = 382,191,611,412.48
  5. Step 5: Solve for x
    x = 382,191,611,412.48/712,140.80
  6. Step 6: Final answer
    x = 536,679.84

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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.