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Finding the Fourth Proportional to 714,875.00, 985,980.80 and 485,609.02

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Solution

The fourth proportional to 714,875.00, 985,980.80 and 485,609.02 is: 669,769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,875.00 : 985,980.80 = 485,609.02 : x
  2. Step 2: Convert to fraction form
    714,875.00/985,980.80 = 485,609.02/x
  3. Step 3: Cross multiply
    714,875.00x = 985,980.80 × 485,609.02
  4. Step 4: Simplify right side
    714,875.00x = 478,801,168,775.89
  5. Step 5: Solve for x
    x = 478,801,168,775.89/714,875.00
  6. Step 6: Final answer
    x = 669,769.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.