Home / 905,431.91-1,249,421.27-497,512.67

Finding the Fourth Proportional to 905,431.91, 1,249,421.27 and 497,512.67

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Solution

The fourth proportional to 905,431.91, 1,249,421.27 and 497,512.67 is: 686,526.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,431.91 : 1,249,421.27 = 497,512.67 : x
  2. Step 2: Convert to fraction form
    905,431.91/1,249,421.27 = 497,512.67/x
  3. Step 3: Cross multiply
    905,431.91x = 1,249,421.27 × 497,512.67
  4. Step 4: Simplify right side
    905,431.91x = 621,602,916,359.83
  5. Step 5: Solve for x
    x = 621,602,916,359.83/905,431.91
  6. Step 6: Final answer
    x = 686,526.41

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.