Home / 921,526.77-1,382,288.95-428,525.03

Finding the Fourth Proportional to 921,526.77, 1,382,288.95 and 428,525.03

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Solution

The fourth proportional to 921,526.77, 1,382,288.95 and 428,525.03 is: 642,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,526.77 : 1,382,288.95 = 428,525.03 : x
  2. Step 2: Convert to fraction form
    921,526.77/1,382,288.95 = 428,525.03/x
  3. Step 3: Cross multiply
    921,526.77x = 1,382,288.95 × 428,525.03
  4. Step 4: Simplify right side
    921,526.77x = 592,345,415,348.34
  5. Step 5: Solve for x
    x = 592,345,415,348.34/921,526.77
  6. Step 6: Final answer
    x = 642,786.98

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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.