Home / 905,288.64-1,249,319.28-497,415.96

Finding the Fourth Proportional to 905,288.64, 1,249,319.28 and 497,415.96

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Solution

The fourth proportional to 905,288.64, 1,249,319.28 and 497,415.96 is: 686,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,288.64 : 1,249,319.28 = 497,415.96 : x
  2. Step 2: Convert to fraction form
    905,288.64/1,249,319.28 = 497,415.96/x
  3. Step 3: Cross multiply
    905,288.64x = 1,249,319.28 × 497,415.96
  4. Step 4: Simplify right side
    905,288.64x = 621,431,349,007.71
  5. Step 5: Solve for x
    x = 621,431,349,007.71/905,288.64
  6. Step 6: Final answer
    x = 686,445.54

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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.