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Finding the Fourth Proportional to 720,582,015.68, 994,495,275.52 and 403,059,907.52

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Solution

The fourth proportional to 720,582,015.68, 994,495,275.52 and 403,059,907.52 is: 556,274,185.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,582,015.68 : 994,495,275.52 = 403,059,907.52 : x
  2. Step 2: Convert to fraction form
    720,582,015.68/994,495,275.52 = 403,059,907.52/x
  3. Step 3: Cross multiply
    720,582,015.68x = 994,495,275.52 × 403,059,907.52
  4. Step 4: Simplify right side
    720,582,015.68x = 400,841,173,780,168,064
  5. Step 5: Solve for x
    x = 400,841,173,780,168,064/720,582,015.68
  6. Step 6: Final answer
    x = 556,274,185.39

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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.