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Finding the Fourth Proportional to 506,671.74, 698,403.06 and 399,071.34

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Solution

The fourth proportional to 506,671.74, 698,403.06 and 399,071.34 is: 550,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,671.74 : 698,403.06 = 399,071.34 : x
  2. Step 2: Convert to fraction form
    506,671.74/698,403.06 = 399,071.34/x
  3. Step 3: Cross multiply
    506,671.74x = 698,403.06 × 399,071.34
  4. Step 4: Simplify right side
    506,671.74x = 278,712,645,014.30
  5. Step 5: Solve for x
    x = 278,712,645,014.30/506,671.74
  6. Step 6: Final answer
    x = 550,085.24

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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.