Home / 904,909.69-1,355,297.28-431,927.20

Finding the Fourth Proportional to 904,909.69, 1,355,297.28 and 431,927.20

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Solution

The fourth proportional to 904,909.69, 1,355,297.28 and 431,927.20 is: 646,904.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,909.69 : 1,355,297.28 = 431,927.20 : x
  2. Step 2: Convert to fraction form
    904,909.69/1,355,297.28 = 431,927.20/x
  3. Step 3: Cross multiply
    904,909.69x = 1,355,297.28 × 431,927.20
  4. Step 4: Simplify right side
    904,909.69x = 585,389,759,318.02
  5. Step 5: Solve for x
    x = 585,389,759,318.02/904,909.69
  6. Step 6: Final answer
    x = 646,904.07

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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.