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Finding the Fourth Proportional to 646,509.06, 892,125.36 and 374,490

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Solution

The fourth proportional to 646,509.06, 892,125.36 and 374,490 is: 516,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,509.06 : 892,125.36 = 374,490 : x
  2. Step 2: Convert to fraction form
    646,509.06/892,125.36 = 374,490/x
  3. Step 3: Cross multiply
    646,509.06x = 892,125.36 × 374,490
  4. Step 4: Simplify right side
    646,509.06x = 334,092,026,066.40
  5. Step 5: Solve for x
    x = 334,092,026,066.40/646,509.06
  6. Step 6: Final answer
    x = 516,763.10

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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.