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Finding the Fourth Proportional to 660,349.80, 990,524.70 and 651,492.45

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Solution

The fourth proportional to 660,349.80, 990,524.70 and 651,492.45 is: 977,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,349.80 : 990,524.70 = 651,492.45 : x
  2. Step 2: Convert to fraction form
    660,349.80/990,524.70 = 651,492.45/x
  3. Step 3: Cross multiply
    660,349.80x = 990,524.70 × 651,492.45
  4. Step 4: Simplify right side
    660,349.80x = 645,319,363,588.52
  5. Step 5: Solve for x
    x = 645,319,363,588.52/660,349.80
  6. Step 6: Final answer
    x = 977,238.68

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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.