Home / 660,444,891.40-990,667,337.10-169,157,211.40

Finding the Fourth Proportional to 660,444,891.40, 990,667,337.10 and 169,157,211.40

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Solution

The fourth proportional to 660,444,891.40, 990,667,337.10 and 169,157,211.40 is: 253,735,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,444,891.40 : 990,667,337.10 = 169,157,211.40 : x
  2. Step 2: Convert to fraction form
    660,444,891.40/990,667,337.10 = 169,157,211.40/x
  3. Step 3: Cross multiply
    660,444,891.40x = 990,667,337.10 × 169,157,211.40
  4. Step 4: Simplify right side
    660,444,891.40x = 167,578,524,168,899,776
  5. Step 5: Solve for x
    x = 167,578,524,168,899,776/660,444,891.40
  6. Step 6: Final answer
    x = 253,735,817.10

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Similar ratio
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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.