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Finding the Fourth Proportional to 819,798.60, 1,229,041.80 and 346,094.40

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Solution

The fourth proportional to 819,798.60, 1,229,041.80 and 346,094.40 is: 518,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,798.60 : 1,229,041.80 = 346,094.40 : x
  2. Step 2: Convert to fraction form
    819,798.60/1,229,041.80 = 346,094.40/x
  3. Step 3: Cross multiply
    819,798.60x = 1,229,041.80 × 346,094.40
  4. Step 4: Simplify right side
    819,798.60x = 425,364,484,345.92
  5. Step 5: Solve for x
    x = 425,364,484,345.92/819,798.60
  6. Step 6: Final answer
    x = 518,864.61

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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.