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Finding the Fourth Proportional to 659,622.80, 988,267.80 and 559,312.40

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Solution

The fourth proportional to 659,622.80, 988,267.80 and 559,312.40 is: 837,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,622.80 : 988,267.80 = 559,312.40 : x
  2. Step 2: Convert to fraction form
    659,622.80/988,267.80 = 559,312.40/x
  3. Step 3: Cross multiply
    659,622.80x = 988,267.80 × 559,312.40
  4. Step 4: Simplify right side
    659,622.80x = 552,750,435,060.72
  5. Step 5: Solve for x
    x = 552,750,435,060.72/659,622.80
  6. Step 6: Final answer
    x = 837,979.58

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1.5x scale

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.