Home / 289,713,813.60-434,570,720.40-257,465,186.40

Finding the Fourth Proportional to 289,713,813.60, 434,570,720.40 and 257,465,186.40

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Solution

The fourth proportional to 289,713,813.60, 434,570,720.40 and 257,465,186.40 is: 386,197,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,713,813.60 : 434,570,720.40 = 257,465,186.40 : x
  2. Step 2: Convert to fraction form
    289,713,813.60/434,570,720.40 = 257,465,186.40/x
  3. Step 3: Cross multiply
    289,713,813.60x = 434,570,720.40 × 257,465,186.40
  4. Step 4: Simplify right side
    289,713,813.60x = 111,886,831,531,768,272
  5. Step 5: Solve for x
    x = 111,886,831,531,768,272/289,713,813.60
  6. Step 6: Final answer
    x = 386,197,779.60

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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.