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Finding the Fourth Proportional to 871,929.60, 1,307,894.40 and 803,695.20

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Solution

The fourth proportional to 871,929.60, 1,307,894.40 and 803,695.20 is: 1,205,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,929.60 : 1,307,894.40 = 803,695.20 : x
  2. Step 2: Convert to fraction form
    871,929.60/1,307,894.40 = 803,695.20/x
  3. Step 3: Cross multiply
    871,929.60x = 1,307,894.40 × 803,695.20
  4. Step 4: Simplify right side
    871,929.60x = 1,051,148,451,386.88
  5. Step 5: Solve for x
    x = 1,051,148,451,386.88/871,929.60
  6. Step 6: Final answer
    x = 1,205,542.80

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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.