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Finding the Fourth Proportional to 613,070.68, 918,410.28 and 346,023.40

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Solution

The fourth proportional to 613,070.68, 918,410.28 and 346,023.40 is: 518,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,070.68 : 918,410.28 = 346,023.40 : x
  2. Step 2: Convert to fraction form
    613,070.68/918,410.28 = 346,023.40/x
  3. Step 3: Cross multiply
    613,070.68x = 918,410.28 × 346,023.40
  4. Step 4: Simplify right side
    613,070.68x = 317,791,447,680.55
  5. Step 5: Solve for x
    x = 317,791,447,680.55/613,070.68
  6. Step 6: Final answer
    x = 518,360.21

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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.