Home / 919,307.04-1,378,960.59-288,271.68

Finding the Fourth Proportional to 919,307.04, 1,378,960.59 and 288,271.68

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Solution

The fourth proportional to 919,307.04, 1,378,960.59 and 288,271.68 is: 432,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,307.04 : 1,378,960.59 = 288,271.68 : x
  2. Step 2: Convert to fraction form
    919,307.04/1,378,960.59 = 288,271.68/x
  3. Step 3: Cross multiply
    919,307.04x = 1,378,960.59 × 288,271.68
  4. Step 4: Simplify right side
    919,307.04x = 397,515,285,933.09
  5. Step 5: Solve for x
    x = 397,515,285,933.09/919,307.04
  6. Step 6: Final answer
    x = 432,407.53

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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.