Home / 430,733,661.60-646,100,492.40-258,740,983.20

Finding the Fourth Proportional to 430,733,661.60, 646,100,492.40 and 258,740,983.20

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Solution

The fourth proportional to 430,733,661.60, 646,100,492.40 and 258,740,983.20 is: 388,111,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,733,661.60 : 646,100,492.40 = 258,740,983.20 : x
  2. Step 2: Convert to fraction form
    430,733,661.60/646,100,492.40 = 258,740,983.20/x
  3. Step 3: Cross multiply
    430,733,661.60x = 646,100,492.40 × 258,740,983.20
  4. Step 4: Simplify right side
    430,733,661.60x = 167,172,676,649,580,128
  5. Step 5: Solve for x
    x = 167,172,676,649,580,128/430,733,661.60
  6. Step 6: Final answer
    x = 388,111,474.80

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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.