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Finding the Fourth Proportional to 978,021.60, 1,465,282.80 and 603,607.20

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Solution

The fourth proportional to 978,021.60, 1,465,282.80 and 603,607.20 is: 904,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,021.60 : 1,465,282.80 = 603,607.20 : x
  2. Step 2: Convert to fraction form
    978,021.60/1,465,282.80 = 603,607.20/x
  3. Step 3: Cross multiply
    978,021.60x = 1,465,282.80 × 603,607.20
  4. Step 4: Simplify right side
    978,021.60x = 884,455,248,116.16
  5. Step 5: Solve for x
    x = 884,455,248,116.16/978,021.60
  6. Step 6: Final answer
    x = 904,331.00

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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.