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Finding the Fourth Proportional to 690,148, 952,425.26 and 375,840.51

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Solution

The fourth proportional to 690,148, 952,425.26 and 375,840.51 is: 518,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,148 : 952,425.26 = 375,840.51 : x
  2. Step 2: Convert to fraction form
    690,148/952,425.26 = 375,840.51/x
  3. Step 3: Cross multiply
    690,148x = 952,425.26 × 375,840.51
  4. Step 4: Simplify right side
    690,148x = 357,959,995,455.28
  5. Step 5: Solve for x
    x = 357,959,995,455.28/690,148
  6. Step 6: Final answer
    x = 518,671.35

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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.