Home / 691,482,948.12-954,253,870.38-378,210,463.38

Finding the Fourth Proportional to 691,482,948.12, 954,253,870.38 and 378,210,463.38

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Solution

The fourth proportional to 691,482,948.12, 954,253,870.38 and 378,210,463.38 is: 521,934,488.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,482,948.12 : 954,253,870.38 = 378,210,463.38 : x
  2. Step 2: Convert to fraction form
    691,482,948.12/954,253,870.38 = 378,210,463.38/x
  3. Step 3: Cross multiply
    691,482,948.12x = 954,253,870.38 × 378,210,463.38
  4. Step 4: Simplify right side
    691,482,948.12x = 360,908,798,498,578,240
  5. Step 5: Solve for x
    x = 360,908,798,498,578,240/691,482,948.12
  6. Step 6: Final answer
    x = 521,934,488.02

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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.