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Finding the Fourth Proportional to 571,503.07, 788,683.13 and 313,403.58

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Solution

The fourth proportional to 571,503.07, 788,683.13 and 313,403.58 is: 432,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,503.07 : 788,683.13 = 313,403.58 : x
  2. Step 2: Convert to fraction form
    571,503.07/788,683.13 = 313,403.58/x
  3. Step 3: Cross multiply
    571,503.07x = 788,683.13 × 313,403.58
  4. Step 4: Simplify right side
    571,503.07x = 247,176,114,860.59
  5. Step 5: Solve for x
    x = 247,176,114,860.59/571,503.07
  6. Step 6: Final answer
    x = 432,501.81

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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.