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Finding the Fourth Proportional to 642,095.98, 886,083.51 and 370,164.40

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Solution

The fourth proportional to 642,095.98, 886,083.51 and 370,164.40 is: 510,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,095.98 : 886,083.51 = 370,164.40 : x
  2. Step 2: Convert to fraction form
    642,095.98/886,083.51 = 370,164.40/x
  3. Step 3: Cross multiply
    642,095.98x = 886,083.51 × 370,164.40
  4. Step 4: Simplify right side
    642,095.98x = 327,996,570,829.04
  5. Step 5: Solve for x
    x = 327,996,570,829.04/642,095.98
  6. Step 6: Final answer
    x = 510,821.72

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1.5x scale

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.