Home / 830,085.20-1,245,127.80-680,494.40

Finding the Fourth Proportional to 830,085.20, 1,245,127.80 and 680,494.40

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Solution

The fourth proportional to 830,085.20, 1,245,127.80 and 680,494.40 is: 1,020,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,085.20 : 1,245,127.80 = 680,494.40 : x
  2. Step 2: Convert to fraction form
    830,085.20/1,245,127.80 = 680,494.40/x
  3. Step 3: Cross multiply
    830,085.20x = 1,245,127.80 × 680,494.40
  4. Step 4: Simplify right side
    830,085.20x = 847,302,495,184.32
  5. Step 5: Solve for x
    x = 847,302,495,184.32/830,085.20
  6. Step 6: Final answer
    x = 1,020,741.60

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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.