Home / 660,118.20-990,566.10-436,126.20

Finding the Fourth Proportional to 660,118.20, 990,566.10 and 436,126.20

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Solution

The fourth proportional to 660,118.20, 990,566.10 and 436,126.20 is: 654,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,118.20 : 990,566.10 = 436,126.20 : x
  2. Step 2: Convert to fraction form
    660,118.20/990,566.10 = 436,126.20/x
  3. Step 3: Cross multiply
    660,118.20x = 990,566.10 × 436,126.20
  4. Step 4: Simplify right side
    660,118.20x = 432,011,829,041.82
  5. Step 5: Solve for x
    x = 432,011,829,041.82/660,118.20
  6. Step 6: Final answer
    x = 654,446.17

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Double scale
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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.