Home / 830,420.64-1,145,980.49-448,447.41

Finding the Fourth Proportional to 830,420.64, 1,145,980.49 and 448,447.41

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Solution

The fourth proportional to 830,420.64, 1,145,980.49 and 448,447.41 is: 618,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,420.64 : 1,145,980.49 = 448,447.41 : x
  2. Step 2: Convert to fraction form
    830,420.64/1,145,980.49 = 448,447.41/x
  3. Step 3: Cross multiply
    830,420.64x = 1,145,980.49 × 448,447.41
  4. Step 4: Simplify right side
    830,420.64x = 513,911,980,408.79
  5. Step 5: Solve for x
    x = 513,911,980,408.79/830,420.64
  6. Step 6: Final answer
    x = 618,857.43

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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.