Home / 877,939.40-1,316,909.10-213,091.40

Finding the Fourth Proportional to 877,939.40, 1,316,909.10 and 213,091.40

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Solution

The fourth proportional to 877,939.40, 1,316,909.10 and 213,091.40 is: 319,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,939.40 : 1,316,909.10 = 213,091.40 : x
  2. Step 2: Convert to fraction form
    877,939.40/1,316,909.10 = 213,091.40/x
  3. Step 3: Cross multiply
    877,939.40x = 1,316,909.10 × 213,091.40
  4. Step 4: Simplify right side
    877,939.40x = 280,622,003,791.74
  5. Step 5: Solve for x
    x = 280,622,003,791.74/877,939.40
  6. Step 6: Final answer
    x = 319,637.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.