Home / 714,319.60-1,069,729.80-339,905.20

Finding the Fourth Proportional to 714,319.60, 1,069,729.80 and 339,905.20

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Solution

The fourth proportional to 714,319.60, 1,069,729.80 and 339,905.20 is: 509,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,319.60 : 1,069,729.80 = 339,905.20 : x
  2. Step 2: Convert to fraction form
    714,319.60/1,069,729.80 = 339,905.20/x
  3. Step 3: Cross multiply
    714,319.60x = 1,069,729.80 × 339,905.20
  4. Step 4: Simplify right side
    714,319.60x = 363,606,721,614.96
  5. Step 5: Solve for x
    x = 363,606,721,614.96/714,319.60
  6. Step 6: Final answer
    x = 509,025.26

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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.