Home / 768,403.35-1,153,416.64-431,731.71

Finding the Fourth Proportional to 768,403.35, 1,153,416.64 and 431,731.71

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Solution

The fourth proportional to 768,403.35, 1,153,416.64 and 431,731.71 is: 648,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,403.35 : 1,153,416.64 = 431,731.71 : x
  2. Step 2: Convert to fraction form
    768,403.35/1,153,416.64 = 431,731.71/x
  3. Step 3: Cross multiply
    768,403.35x = 1,153,416.64 × 431,731.71
  4. Step 4: Simplify right side
    768,403.35x = 497,966,531,483.24
  5. Step 5: Solve for x
    x = 497,966,531,483.24/768,403.35
  6. Step 6: Final answer
    x = 648,053.57

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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.