Home / 910,574.15-1,256,681.73-528,578.15

Finding the Fourth Proportional to 910,574.15, 1,256,681.73 and 528,578.15

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Solution

The fourth proportional to 910,574.15, 1,256,681.73 and 528,578.15 is: 729,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,574.15 : 1,256,681.73 = 528,578.15 : x
  2. Step 2: Convert to fraction form
    910,574.15/1,256,681.73 = 528,578.15/x
  3. Step 3: Cross multiply
    910,574.15x = 1,256,681.73 × 528,578.15
  4. Step 4: Simplify right side
    910,574.15x = 664,254,497,698.79
  5. Step 5: Solve for x
    x = 664,254,497,698.79/910,574.15
  6. Step 6: Final answer
    x = 729,489.74

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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.