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Finding the Fourth Proportional to 740,484, 1,021,875.21 and 400,959.54

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Solution

The fourth proportional to 740,484, 1,021,875.21 and 400,959.54 is: 553,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,484 : 1,021,875.21 = 400,959.54 : x
  2. Step 2: Convert to fraction form
    740,484/1,021,875.21 = 400,959.54/x
  3. Step 3: Cross multiply
    740,484x = 1,021,875.21 × 400,959.54
  4. Step 4: Simplify right side
    740,484x = 409,730,614,139.00
  5. Step 5: Solve for x
    x = 409,730,614,139.00/740,484
  6. Step 6: Final answer
    x = 553,328.11

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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.