Home / 905,383.19-1,249,428.51-497,511.30

Finding the Fourth Proportional to 905,383.19, 1,249,428.51 and 497,511.30

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Solution

The fourth proportional to 905,383.19, 1,249,428.51 and 497,511.30 is: 686,565.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,383.19 : 1,249,428.51 = 497,511.30 : x
  2. Step 2: Convert to fraction form
    905,383.19/1,249,428.51 = 497,511.30/x
  3. Step 3: Cross multiply
    905,383.19x = 1,249,428.51 × 497,511.30
  4. Step 4: Simplify right side
    905,383.19x = 621,604,802,267.16
  5. Step 5: Solve for x
    x = 621,604,802,267.16/905,383.19
  6. Step 6: Final answer
    x = 686,565.44

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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.