Home / 514,971,950.32-710,664,988.40-280,020,927.21

Finding the Fourth Proportional to 514,971,950.32, 710,664,988.40 and 280,020,927.21

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Solution

The fourth proportional to 514,971,950.32, 710,664,988.40 and 280,020,927.21 is: 386,430,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,971,950.32 : 710,664,988.40 = 280,020,927.21 : x
  2. Step 2: Convert to fraction form
    514,971,950.32/710,664,988.40 = 280,020,927.21/x
  3. Step 3: Cross multiply
    514,971,950.32x = 710,664,988.40 × 280,020,927.21
  4. Step 4: Simplify right side
    514,971,950.32x = 199,001,068,987,451,872
  5. Step 5: Solve for x
    x = 199,001,068,987,451,872/514,971,950.32
  6. Step 6: Final answer
    x = 386,430,889.81

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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.