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Finding the Fourth Proportional to 659,913.80, 989,870.70 and 460,848.20

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Solution

The fourth proportional to 659,913.80, 989,870.70 and 460,848.20 is: 691,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,913.80 : 989,870.70 = 460,848.20 : x
  2. Step 2: Convert to fraction form
    659,913.80/989,870.70 = 460,848.20/x
  3. Step 3: Cross multiply
    659,913.80x = 989,870.70 × 460,848.20
  4. Step 4: Simplify right side
    659,913.80x = 456,180,130,327.74
  5. Step 5: Solve for x
    x = 456,180,130,327.74/659,913.80
  6. Step 6: Final answer
    x = 691,272.30

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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.