Home / 679,809.40-1,020,005.70-347,385.40

Finding the Fourth Proportional to 679,809.40, 1,020,005.70 and 347,385.40

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Solution

The fourth proportional to 679,809.40, 1,020,005.70 and 347,385.40 is: 521,227.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,809.40 : 1,020,005.70 = 347,385.40 : x
  2. Step 2: Convert to fraction form
    679,809.40/1,020,005.70 = 347,385.40/x
  3. Step 3: Cross multiply
    679,809.40x = 1,020,005.70 × 347,385.40
  4. Step 4: Simplify right side
    679,809.40x = 354,335,088,096.78
  5. Step 5: Solve for x
    x = 354,335,088,096.78/679,809.40
  6. Step 6: Final answer
    x = 521,227.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.