Home / 959,157.40-1,438,207.08-390,392.50

Finding the Fourth Proportional to 959,157.40, 1,438,207.08 and 390,392.50

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Solution

The fourth proportional to 959,157.40, 1,438,207.08 and 390,392.50 is: 585,373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,157.40 : 1,438,207.08 = 390,392.50 : x
  2. Step 2: Convert to fraction form
    959,157.40/1,438,207.08 = 390,392.50/x
  3. Step 3: Cross multiply
    959,157.40x = 1,438,207.08 × 390,392.50
  4. Step 4: Simplify right side
    959,157.40x = 561,465,257,478.90
  5. Step 5: Solve for x
    x = 561,465,257,478.90/959,157.40
  6. Step 6: Final answer
    x = 585,373.43

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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.