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Finding the Fourth Proportional to 713,673.48, 984,880.50 and 391,413

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Solution

The fourth proportional to 713,673.48, 984,880.50 and 391,413 is: 540,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,673.48 : 984,880.50 = 391,413 : x
  2. Step 2: Convert to fraction form
    713,673.48/984,880.50 = 391,413/x
  3. Step 3: Cross multiply
    713,673.48x = 984,880.50 × 391,413
  4. Step 4: Simplify right side
    713,673.48x = 385,495,031,146.50
  5. Step 5: Solve for x
    x = 385,495,031,146.50/713,673.48
  6. Step 6: Final answer
    x = 540,156.03

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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.