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Finding the Fourth Proportional to 578,948.80, 869,200.80 and 369,515.20

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Solution

The fourth proportional to 578,948.80, 869,200.80 and 369,515.20 is: 554,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,948.80 : 869,200.80 = 369,515.20 : x
  2. Step 2: Convert to fraction form
    578,948.80/869,200.80 = 369,515.20/x
  3. Step 3: Cross multiply
    578,948.80x = 869,200.80 × 369,515.20
  4. Step 4: Simplify right side
    578,948.80x = 321,182,907,452.16
  5. Step 5: Solve for x
    x = 321,182,907,452.16/578,948.80
  6. Step 6: Final answer
    x = 554,769.10

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1.5x scale

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.