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Finding the Fourth Proportional to 691,642.76, 955,254.32 and 464,894.60

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Solution

The fourth proportional to 691,642.76, 955,254.32 and 464,894.60 is: 642,083.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,642.76 : 955,254.32 = 464,894.60 : x
  2. Step 2: Convert to fraction form
    691,642.76/955,254.32 = 464,894.60/x
  3. Step 3: Cross multiply
    691,642.76x = 955,254.32 × 464,894.60
  4. Step 4: Simplify right side
    691,642.76x = 444,092,574,994.67
  5. Step 5: Solve for x
    x = 444,092,574,994.67/691,642.76
  6. Step 6: Final answer
    x = 642,083.75

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Double scale
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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.