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Finding the Fourth Proportional to 425,295.76, 586,513.90 and 310,392.40

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Solution

The fourth proportional to 425,295.76, 586,513.90 and 310,392.40 is: 428,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,295.76 : 586,513.90 = 310,392.40 : x
  2. Step 2: Convert to fraction form
    425,295.76/586,513.90 = 310,392.40/x
  3. Step 3: Cross multiply
    425,295.76x = 586,513.90 × 310,392.40
  4. Step 4: Simplify right side
    425,295.76x = 182,049,457,054.36
  5. Step 5: Solve for x
    x = 182,049,457,054.36/425,295.76
  6. Step 6: Final answer
    x = 428,053.78

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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.