Home / 745,511.10-1,118,266.65-509,315.10

Finding the Fourth Proportional to 745,511.10, 1,118,266.65 and 509,315.10

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Solution

The fourth proportional to 745,511.10, 1,118,266.65 and 509,315.10 is: 763,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,511.10 : 1,118,266.65 = 509,315.10 : x
  2. Step 2: Convert to fraction form
    745,511.10/1,118,266.65 = 509,315.10/x
  3. Step 3: Cross multiply
    745,511.10x = 1,118,266.65 × 509,315.10
  4. Step 4: Simplify right side
    745,511.10x = 569,550,090,671.42
  5. Step 5: Solve for x
    x = 569,550,090,671.42/745,511.10
  6. Step 6: Final answer
    x = 763,972.65

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Half scale
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Double scale
Find fourth proportional to 745,512.10, 1,118,268.15 and 509,316.10
Similar ratio
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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.