Home / 5,280,303,661.40-7,920,455,492.10-2,659,094,931.80

Finding the Fourth Proportional to 5,280,303,661.40, 7,920,455,492.10 and 2,659,094,931.80

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Solution

The fourth proportional to 5,280,303,661.40, 7,920,455,492.10 and 2,659,094,931.80 is: 3,988,642,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,303,661.40 : 7,920,455,492.10 = 2,659,094,931.80 : x
  2. Step 2: Convert to fraction form
    5,280,303,661.40/7,920,455,492.10 = 2,659,094,931.80/x
  3. Step 3: Cross multiply
    5,280,303,661.40x = 7,920,455,492.10 × 2,659,094,931.80
  4. Step 4: Simplify right side
    5,280,303,661.40x = 21,061,243,056,590,585,856
  5. Step 5: Solve for x
    x = 21,061,243,056,590,585,856/5,280,303,661.40
  6. Step 6: Final answer
    x = 3,988,642,397.70

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Double scale
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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.