Home / 631,927.80-947,891.70-379,985.40

Finding the Fourth Proportional to 631,927.80, 947,891.70 and 379,985.40

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Solution

The fourth proportional to 631,927.80, 947,891.70 and 379,985.40 is: 569,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,927.80 : 947,891.70 = 379,985.40 : x
  2. Step 2: Convert to fraction form
    631,927.80/947,891.70 = 379,985.40/x
  3. Step 3: Cross multiply
    631,927.80x = 947,891.70 × 379,985.40
  4. Step 4: Simplify right side
    631,927.80x = 360,185,006,781.18
  5. Step 5: Solve for x
    x = 360,185,006,781.18/631,927.80
  6. Step 6: Final answer
    x = 569,978.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.