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Finding the Fourth Proportional to 898,362, 1,239,741.45 and 490,464

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Solution

The fourth proportional to 898,362, 1,239,741.45 and 490,464 is: 676,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,362 : 1,239,741.45 = 490,464 : x
  2. Step 2: Convert to fraction form
    898,362/1,239,741.45 = 490,464/x
  3. Step 3: Cross multiply
    898,362x = 1,239,741.45 × 490,464
  4. Step 4: Simplify right side
    898,362x = 608,048,550,532.80
  5. Step 5: Solve for x
    x = 608,048,550,532.80/898,362
  6. Step 6: Final answer
    x = 676,841.35

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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.