Home / 621,409.61-931,468.03-421,746.23

Finding the Fourth Proportional to 621,409.61, 931,468.03 and 421,746.23

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Solution

The fourth proportional to 621,409.61, 931,468.03 and 421,746.23 is: 632,180.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,409.61 : 931,468.03 = 421,746.23 : x
  2. Step 2: Convert to fraction form
    621,409.61/931,468.03 = 421,746.23/x
  3. Step 3: Cross multiply
    621,409.61x = 931,468.03 × 421,746.23
  4. Step 4: Simplify right side
    621,409.61x = 392,843,130,018.03
  5. Step 5: Solve for x
    x = 392,843,130,018.03/621,409.61
  6. Step 6: Final answer
    x = 632,180.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.