Home / 459,687,946.68-689,404,341.78-127,618,670.52

Finding the Fourth Proportional to 459,687,946.68, 689,404,341.78 and 127,618,670.52

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Solution

The fourth proportional to 459,687,946.68, 689,404,341.78 and 127,618,670.52 is: 191,392,587.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,687,946.68 : 689,404,341.78 = 127,618,670.52 : x
  2. Step 2: Convert to fraction form
    459,687,946.68/689,404,341.78 = 127,618,670.52/x
  3. Step 3: Cross multiply
    459,687,946.68x = 689,404,341.78 × 127,618,670.52
  4. Step 4: Simplify right side
    459,687,946.68x = 87,980,865,548,679,280
  5. Step 5: Solve for x
    x = 87,980,865,548,679,280/459,687,946.68
  6. Step 6: Final answer
    x = 191,392,587.48

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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.