Home / 1,121,405.40-1,547,485.02-612,077.40

Finding the Fourth Proportional to 1,121,405.40, 1,547,485.02 and 612,077.40

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Solution

The fourth proportional to 1,121,405.40, 1,547,485.02 and 612,077.40 is: 844,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,405.40 : 1,547,485.02 = 612,077.40 : x
  2. Step 2: Convert to fraction form
    1,121,405.40/1,547,485.02 = 612,077.40/x
  3. Step 3: Cross multiply
    1,121,405.40x = 1,547,485.02 × 612,077.40
  4. Step 4: Simplify right side
    1,121,405.40x = 947,180,607,580.55
  5. Step 5: Solve for x
    x = 947,180,607,580.55/1,121,405.40
  6. Step 6: Final answer
    x = 844,637.10

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Double scale
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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.