Home / 877,918.40-1,316,877.60-213,070.40

Finding the Fourth Proportional to 877,918.40, 1,316,877.60 and 213,070.40

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Solution

The fourth proportional to 877,918.40, 1,316,877.60 and 213,070.40 is: 319,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,918.40 : 1,316,877.60 = 213,070.40 : x
  2. Step 2: Convert to fraction form
    877,918.40/1,316,877.60 = 213,070.40/x
  3. Step 3: Cross multiply
    877,918.40x = 1,316,877.60 × 213,070.40
  4. Step 4: Simplify right side
    877,918.40x = 280,587,636,983.04
  5. Step 5: Solve for x
    x = 280,587,636,983.04/877,918.40
  6. Step 6: Final answer
    x = 319,605.60

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Double scale
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Similar ratio
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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.