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Finding the Fourth Proportional to 611,913.90, 844,321.95 and 357,275.82

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Solution

The fourth proportional to 611,913.90, 844,321.95 and 357,275.82 is: 492,971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,913.90 : 844,321.95 = 357,275.82 : x
  2. Step 2: Convert to fraction form
    611,913.90/844,321.95 = 357,275.82/x
  3. Step 3: Cross multiply
    611,913.90x = 844,321.95 × 357,275.82
  4. Step 4: Simplify right side
    611,913.90x = 301,655,817,030.25
  5. Step 5: Solve for x
    x = 301,655,817,030.25/611,913.90
  6. Step 6: Final answer
    x = 492,971.02

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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.