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Finding the Fourth Proportional to 674,387.49, 930,643.88 and 368,457.30

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Solution

The fourth proportional to 674,387.49, 930,643.88 and 368,457.30 is: 508,465.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,387.49 : 930,643.88 = 368,457.30 : x
  2. Step 2: Convert to fraction form
    674,387.49/930,643.88 = 368,457.30/x
  3. Step 3: Cross multiply
    674,387.49x = 930,643.88 × 368,457.30
  4. Step 4: Simplify right side
    674,387.49x = 342,902,529,444.04
  5. Step 5: Solve for x
    x = 342,902,529,444.04/674,387.49
  6. Step 6: Final answer
    x = 508,465.14

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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.