Home / 900,326.61-1,242,312.80-518,279.58

Finding the Fourth Proportional to 900,326.61, 1,242,312.80 and 518,279.58

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Solution

The fourth proportional to 900,326.61, 1,242,312.80 and 518,279.58 is: 715,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,326.61 : 1,242,312.80 = 518,279.58 : x
  2. Step 2: Convert to fraction form
    900,326.61/1,242,312.80 = 518,279.58/x
  3. Step 3: Cross multiply
    900,326.61x = 1,242,312.80 × 518,279.58
  4. Step 4: Simplify right side
    900,326.61x = 643,865,353,621.23
  5. Step 5: Solve for x
    x = 643,865,353,621.23/900,326.61
  6. Step 6: Final answer
    x = 715,146.42

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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.