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Finding the Fourth Proportional to 569,966.49, 786,510.41 and 315,312.21

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Solution

The fourth proportional to 569,966.49, 786,510.41 and 315,312.21 is: 435,106.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,966.49 : 786,510.41 = 315,312.21 : x
  2. Step 2: Convert to fraction form
    569,966.49/786,510.41 = 315,312.21/x
  3. Step 3: Cross multiply
    569,966.49x = 786,510.41 × 315,312.21
  4. Step 4: Simplify right side
    569,966.49x = 247,996,333,988.55
  5. Step 5: Solve for x
    x = 247,996,333,988.55/569,966.49
  6. Step 6: Final answer
    x = 435,106.87

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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.