Home / 689,843,154.09-951,856,185.56-392,468,035.53

Finding the Fourth Proportional to 689,843,154.09, 951,856,185.56 and 392,468,035.53

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Solution

The fourth proportional to 689,843,154.09, 951,856,185.56 and 392,468,035.53 is: 541,533,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,843,154.09 : 951,856,185.56 = 392,468,035.53 : x
  2. Step 2: Convert to fraction form
    689,843,154.09/951,856,185.56 = 392,468,035.53/x
  3. Step 3: Cross multiply
    689,843,154.09x = 951,856,185.56 × 392,468,035.53
  4. Step 4: Simplify right side
    689,843,154.09x = 373,573,127,251,849,984
  5. Step 5: Solve for x
    x = 373,573,127,251,849,984/689,843,154.09
  6. Step 6: Final answer
    x = 541,533,426.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.