Home / 929,376.80-1,390,954.80-649,440.80

Finding the Fourth Proportional to 929,376.80, 1,390,954.80 and 649,440.80

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Solution

The fourth proportional to 929,376.80, 1,390,954.80 and 649,440.80 is: 971,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,376.80 : 1,390,954.80 = 649,440.80 : x
  2. Step 2: Convert to fraction form
    929,376.80/1,390,954.80 = 649,440.80/x
  3. Step 3: Cross multiply
    929,376.80x = 1,390,954.80 × 649,440.80
  4. Step 4: Simplify right side
    929,376.80x = 903,342,798,075.84
  5. Step 5: Solve for x
    x = 903,342,798,075.84/929,376.80
  6. Step 6: Final answer
    x = 971,987.68

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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.