Home / 905,509.53-1,249,602.39-497,637.68

Finding the Fourth Proportional to 905,509.53, 1,249,602.39 and 497,637.68

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Solution

The fourth proportional to 905,509.53, 1,249,602.39 and 497,637.68 is: 686,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,509.53 : 1,249,602.39 = 497,637.68 : x
  2. Step 2: Convert to fraction form
    905,509.53/1,249,602.39 = 497,637.68/x
  3. Step 3: Cross multiply
    905,509.53x = 1,249,602.39 × 497,637.68
  4. Step 4: Simplify right side
    905,509.53x = 621,849,228,034.04
  5. Step 5: Solve for x
    x = 621,849,228,034.04/905,509.53
  6. Step 6: Final answer
    x = 686,739.57

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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.