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Finding the Fourth Proportional to 713,579.50, 984,769.59 and 391,302.01

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Solution

The fourth proportional to 713,579.50, 984,769.59 and 391,302.01 is: 540,013.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,579.50 : 984,769.59 = 391,302.01 : x
  2. Step 2: Convert to fraction form
    713,579.50/984,769.59 = 391,302.01/x
  3. Step 3: Cross multiply
    713,579.50x = 984,769.59 × 391,302.01
  4. Step 4: Simplify right side
    713,579.50x = 385,342,319,953.88
  5. Step 5: Solve for x
    x = 385,342,319,953.88/713,579.50
  6. Step 6: Final answer
    x = 540,013.16

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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.