Home / 448,009,641.20-672,014,461.80-402,093,138.80

Finding the Fourth Proportional to 448,009,641.20, 672,014,461.80 and 402,093,138.80

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Solution

The fourth proportional to 448,009,641.20, 672,014,461.80 and 402,093,138.80 is: 603,139,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,009,641.20 : 672,014,461.80 = 402,093,138.80 : x
  2. Step 2: Convert to fraction form
    448,009,641.20/672,014,461.80 = 402,093,138.80/x
  3. Step 3: Cross multiply
    448,009,641.20x = 672,014,461.80 × 402,093,138.80
  4. Step 4: Simplify right side
    448,009,641.20x = 270,212,404,264,154,688
  5. Step 5: Solve for x
    x = 270,212,404,264,154,688/448,009,641.20
  6. Step 6: Final answer
    x = 603,139,708.20

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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.