Home / 877,109.28-1,210,205.52-514,514.40

Finding the Fourth Proportional to 877,109.28, 1,210,205.52 and 514,514.40

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Solution

The fourth proportional to 877,109.28, 1,210,205.52 and 514,514.40 is: 709,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,109.28 : 1,210,205.52 = 514,514.40 : x
  2. Step 2: Convert to fraction form
    877,109.28/1,210,205.52 = 514,514.40/x
  3. Step 3: Cross multiply
    877,109.28x = 1,210,205.52 × 514,514.40
  4. Step 4: Simplify right side
    877,109.28x = 622,668,166,999.49
  5. Step 5: Solve for x
    x = 622,668,166,999.49/877,109.28
  6. Step 6: Final answer
    x = 709,909.45

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Double scale
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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.