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Finding the Fourth Proportional to 615,986.40, 924,109.20 and 260,817.60

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Solution

The fourth proportional to 615,986.40, 924,109.20 and 260,817.60 is: 391,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,986.40 : 924,109.20 = 260,817.60 : x
  2. Step 2: Convert to fraction form
    615,986.40/924,109.20 = 260,817.60/x
  3. Step 3: Cross multiply
    615,986.40x = 924,109.20 × 260,817.60
  4. Step 4: Simplify right side
    615,986.40x = 241,023,943,681.92
  5. Step 5: Solve for x
    x = 241,023,943,681.92/615,986.40
  6. Step 6: Final answer
    x = 391,281.27

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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.