Home / 830,374.91-1,145,920.88-467,803.12

Finding the Fourth Proportional to 830,374.91, 1,145,920.88 and 467,803.12

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Solution

The fourth proportional to 830,374.91, 1,145,920.88 and 467,803.12 is: 645,570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,374.91 : 1,145,920.88 = 467,803.12 : x
  2. Step 2: Convert to fraction form
    830,374.91/1,145,920.88 = 467,803.12/x
  3. Step 3: Cross multiply
    830,374.91x = 1,145,920.88 × 467,803.12
  4. Step 4: Simplify right side
    830,374.91x = 536,065,362,937.15
  5. Step 5: Solve for x
    x = 536,065,362,937.15/830,374.91
  6. Step 6: Final answer
    x = 645,570.28

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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.