Home / 918,825.42-1,268,006.50-556,315.60

Finding the Fourth Proportional to 918,825.42, 1,268,006.50 and 556,315.60

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Solution

The fourth proportional to 918,825.42, 1,268,006.50 and 556,315.60 is: 767,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,825.42 : 1,268,006.50 = 556,315.60 : x
  2. Step 2: Convert to fraction form
    918,825.42/1,268,006.50 = 556,315.60/x
  3. Step 3: Cross multiply
    918,825.42x = 1,268,006.50 × 556,315.60
  4. Step 4: Simplify right side
    918,825.42x = 705,411,796,851.40
  5. Step 5: Solve for x
    x = 705,411,796,851.40/918,825.42
  6. Step 6: Final answer
    x = 767,732.13

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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.