Home / 905,369.40-1,249,403.58-497,475.54

Finding the Fourth Proportional to 905,369.40, 1,249,403.58 and 497,475.54

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Solution

The fourth proportional to 905,369.40, 1,249,403.58 and 497,475.54 is: 686,512.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,369.40 : 1,249,403.58 = 497,475.54 : x
  2. Step 2: Convert to fraction form
    905,369.40/1,249,403.58 = 497,475.54/x
  3. Step 3: Cross multiply
    905,369.40x = 1,249,403.58 × 497,475.54
  4. Step 4: Simplify right side
    905,369.40x = 621,547,720,638.43
  5. Step 5: Solve for x
    x = 621,547,720,638.43/905,369.40
  6. Step 6: Final answer
    x = 686,512.84

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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.