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Finding the Fourth Proportional to 647,430.92, 893,435.10 and 357,042.34

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Solution

The fourth proportional to 647,430.92, 893,435.10 and 357,042.34 is: 492,707.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,430.92 : 893,435.10 = 357,042.34 : x
  2. Step 2: Convert to fraction form
    647,430.92/893,435.10 = 357,042.34/x
  3. Step 3: Cross multiply
    647,430.92x = 893,435.10 × 357,042.34
  4. Step 4: Simplify right side
    647,430.92x = 318,994,154,274.96
  5. Step 5: Solve for x
    x = 318,994,154,274.96/647,430.92
  6. Step 6: Final answer
    x = 492,707.63

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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.