Home / 689,220,818.42-951,130,799.52-375,956,425.58

Finding the Fourth Proportional to 689,220,818.42, 951,130,799.52 and 375,956,425.58

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Solution

The fourth proportional to 689,220,818.42, 951,130,799.52 and 375,956,425.58 is: 518,823,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,220,818.42 : 951,130,799.52 = 375,956,425.58 : x
  2. Step 2: Convert to fraction form
    689,220,818.42/951,130,799.52 = 375,956,425.58/x
  3. Step 3: Cross multiply
    689,220,818.42x = 951,130,799.52 × 375,956,425.58
  4. Step 4: Simplify right side
    689,220,818.42x = 357,583,735,646,586,752
  5. Step 5: Solve for x
    x = 357,583,735,646,586,752/689,220,818.42
  6. Step 6: Final answer
    x = 518,823,178.42

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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.