Home / 905,430.78-1,249,877.52-611,144.28

Finding the Fourth Proportional to 905,430.78, 1,249,877.52 and 611,144.28

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Solution

The fourth proportional to 905,430.78, 1,249,877.52 and 611,144.28 is: 843,637.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,430.78 : 1,249,877.52 = 611,144.28 : x
  2. Step 2: Convert to fraction form
    905,430.78/1,249,877.52 = 611,144.28/x
  3. Step 3: Cross multiply
    905,430.78x = 1,249,877.52 × 611,144.28
  4. Step 4: Simplify right side
    905,430.78x = 763,855,497,048.59
  5. Step 5: Solve for x
    x = 763,855,497,048.59/905,430.78
  6. Step 6: Final answer
    x = 843,637.65

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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.