Home / 530,154.09-731,604.60-288,431.15

Finding the Fourth Proportional to 530,154.09, 731,604.60 and 288,431.15

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Solution

The fourth proportional to 530,154.09, 731,604.60 and 288,431.15 is: 398,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,154.09 : 731,604.60 = 288,431.15 : x
  2. Step 2: Convert to fraction form
    530,154.09/731,604.60 = 288,431.15/x
  3. Step 3: Cross multiply
    530,154.09x = 731,604.60 × 288,431.15
  4. Step 4: Simplify right side
    530,154.09x = 211,017,552,465.27
  5. Step 5: Solve for x
    x = 211,017,552,465.27/530,154.09
  6. Step 6: Final answer
    x = 398,030.60

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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.