Home / 830,420.27-1,145,979.95-448,447.04

Finding the Fourth Proportional to 830,420.27, 1,145,979.95 and 448,447.04

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Solution

The fourth proportional to 830,420.27, 1,145,979.95 and 448,447.04 is: 618,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,420.27 : 1,145,979.95 = 448,447.04 : x
  2. Step 2: Convert to fraction form
    830,420.27/1,145,979.95 = 448,447.04/x
  3. Step 3: Cross multiply
    830,420.27x = 1,145,979.95 × 448,447.04
  4. Step 4: Simplify right side
    830,420.27x = 513,911,308,504.71
  5. Step 5: Solve for x
    x = 513,911,308,504.71/830,420.27
  6. Step 6: Final answer
    x = 618,856.90

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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.