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Finding the Fourth Proportional to 978,103,486.08, 1,350,402,399.36 and 607,219,079.04

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Solution

The fourth proportional to 978,103,486.08, 1,350,402,399.36 and 607,219,079.04 is: 838,346,977.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,103,486.08 : 1,350,402,399.36 = 607,219,079.04 : x
  2. Step 2: Convert to fraction form
    978,103,486.08/1,350,402,399.36 = 607,219,079.04/x
  3. Step 3: Cross multiply
    978,103,486.08x = 1,350,402,399.36 × 607,219,079.04
  4. Step 4: Simplify right side
    978,103,486.08x = 819,990,101,272,785,408
  5. Step 5: Solve for x
    x = 819,990,101,272,785,408/978,103,486.08
  6. Step 6: Final answer
    x = 838,346,977.54

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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.