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Finding the Fourth Proportional to 570,547.75, 787,380.51 and 315,898.93

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Solution

The fourth proportional to 570,547.75, 787,380.51 and 315,898.93 is: 435,954.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,547.75 : 787,380.51 = 315,898.93 : x
  2. Step 2: Convert to fraction form
    570,547.75/787,380.51 = 315,898.93/x
  3. Step 3: Cross multiply
    570,547.75x = 787,380.51 × 315,898.93
  4. Step 4: Simplify right side
    570,547.75x = 248,732,660,611.85
  5. Step 5: Solve for x
    x = 248,732,660,611.85/570,547.75
  6. Step 6: Final answer
    x = 435,954.15

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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.