Home / 487,413.09-672,359.79-283,441.59

Finding the Fourth Proportional to 487,413.09, 672,359.79 and 283,441.59

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Solution

The fourth proportional to 487,413.09, 672,359.79 and 283,441.59 is: 390,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,413.09 : 672,359.79 = 283,441.59 : x
  2. Step 2: Convert to fraction form
    487,413.09/672,359.79 = 283,441.59/x
  3. Step 3: Cross multiply
    487,413.09x = 672,359.79 × 283,441.59
  4. Step 4: Simplify right side
    487,413.09x = 190,574,727,929.67
  5. Step 5: Solve for x
    x = 190,574,727,929.67/487,413.09
  6. Step 6: Final answer
    x = 390,992.22

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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.