Home / 458,870,547.63-687,815,702.40-261,709,479.57

Finding the Fourth Proportional to 458,870,547.63, 687,815,702.40 and 261,709,479.57

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Solution

The fourth proportional to 458,870,547.63, 687,815,702.40 and 261,709,479.57 is: 392,284,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,870,547.63 : 687,815,702.40 = 261,709,479.57 : x
  2. Step 2: Convert to fraction form
    458,870,547.63/687,815,702.40 = 261,709,479.57/x
  3. Step 3: Cross multiply
    458,870,547.63x = 687,815,702.40 × 261,709,479.57
  4. Step 4: Simplify right side
    458,870,547.63x = 180,007,889,515,177,984
  5. Step 5: Solve for x
    x = 180,007,889,515,177,984/458,870,547.63
  6. Step 6: Final answer
    x = 392,284,687.79

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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.