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Finding the Fourth Proportional to 678,980.48, 937,008.80 and 373,076

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Solution

The fourth proportional to 678,980.48, 937,008.80 and 373,076 is: 514,853.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,980.48 : 937,008.80 = 373,076 : x
  2. Step 2: Convert to fraction form
    678,980.48/937,008.80 = 373,076/x
  3. Step 3: Cross multiply
    678,980.48x = 937,008.80 × 373,076
  4. Step 4: Simplify right side
    678,980.48x = 349,575,495,068.80
  5. Step 5: Solve for x
    x = 349,575,495,068.80/678,980.48
  6. Step 6: Final answer
    x = 514,853.53

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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.