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Finding the Fourth Proportional to 390,666.54, 588,927.95 and 364,626.47

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Solution

The fourth proportional to 390,666.54, 588,927.95 and 364,626.47 is: 549,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,666.54 : 588,927.95 = 364,626.47 : x
  2. Step 2: Convert to fraction form
    390,666.54/588,927.95 = 364,626.47/x
  3. Step 3: Cross multiply
    390,666.54x = 588,927.95 × 364,626.47
  4. Step 4: Simplify right side
    390,666.54x = 214,738,714,725.06
  5. Step 5: Solve for x
    x = 214,738,714,725.06/390,666.54
  6. Step 6: Final answer
    x = 549,672.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.