Home / 849,478.79-1,172,110.80-487,016.35

Finding the Fourth Proportional to 849,478.79, 1,172,110.80 and 487,016.35

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Solution

The fourth proportional to 849,478.79, 1,172,110.80 and 487,016.35 is: 671,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,478.79 : 1,172,110.80 = 487,016.35 : x
  2. Step 2: Convert to fraction form
    849,478.79/1,172,110.80 = 487,016.35/x
  3. Step 3: Cross multiply
    849,478.79x = 1,172,110.80 × 487,016.35
  4. Step 4: Simplify right side
    849,478.79x = 570,837,122,507.61
  5. Step 5: Solve for x
    x = 570,837,122,507.61/849,478.79
  6. Step 6: Final answer
    x = 671,985.14

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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.