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Finding the Fourth Proportional to 561,316.30, 787,501.70 and 561,316.30

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Solution

The fourth proportional to 561,316.30, 787,501.70 and 561,316.30 is: 787,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,316.30 : 787,501.70 = 561,316.30 : x
  2. Step 2: Convert to fraction form
    561,316.30/787,501.70 = 561,316.30/x
  3. Step 3: Cross multiply
    561,316.30x = 787,501.70 × 561,316.30
  4. Step 4: Simplify right side
    561,316.30x = 442,037,540,487.71
  5. Step 5: Solve for x
    x = 442,037,540,487.71/561,316.30
  6. Step 6: Final answer
    x = 787,501.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.