Home / 1,138,897.60-1,708,346.40-720,030.40

Finding the Fourth Proportional to 1,138,897.60, 1,708,346.40 and 720,030.40

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Solution

The fourth proportional to 1,138,897.60, 1,708,346.40 and 720,030.40 is: 1,080,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,897.60 : 1,708,346.40 = 720,030.40 : x
  2. Step 2: Convert to fraction form
    1,138,897.60/1,708,346.40 = 720,030.40/x
  3. Step 3: Cross multiply
    1,138,897.60x = 1,708,346.40 × 720,030.40
  4. Step 4: Simplify right side
    1,138,897.60x = 1,230,061,341,730.56
  5. Step 5: Solve for x
    x = 1,230,061,341,730.56/1,138,897.60
  6. Step 6: Final answer
    x = 1,080,045.60

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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.