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Finding the Fourth Proportional to 615,999.40, 924,128.70 and 260,830.60

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Solution

The fourth proportional to 615,999.40, 924,128.70 and 260,830.60 is: 391,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,999.40 : 924,128.70 = 260,830.60 : x
  2. Step 2: Convert to fraction form
    615,999.40/924,128.70 = 260,830.60/x
  3. Step 3: Cross multiply
    615,999.40x = 924,128.70 × 260,830.60
  4. Step 4: Simplify right side
    615,999.40x = 241,041,043,298.22
  5. Step 5: Solve for x
    x = 241,041,043,298.22/615,999.40
  6. Step 6: Final answer
    x = 391,300.78

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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.