Home / 905,613.02-1,249,664.64-497,710.40

Finding the Fourth Proportional to 905,613.02, 1,249,664.64 and 497,710.40

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Solution

The fourth proportional to 905,613.02, 1,249,664.64 and 497,710.40 is: 686,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,613.02 : 1,249,664.64 = 497,710.40 : x
  2. Step 2: Convert to fraction form
    905,613.02/1,249,664.64 = 497,710.40/x
  3. Step 3: Cross multiply
    905,613.02x = 1,249,664.64 × 497,710.40
  4. Step 4: Simplify right side
    905,613.02x = 621,971,087,840.26
  5. Step 5: Solve for x
    x = 621,971,087,840.26/905,613.02
  6. Step 6: Final answer
    x = 686,795.66

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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.