Home / 530,617,389.80-732,242,189.67-289,215,445.28

Finding the Fourth Proportional to 530,617,389.80, 732,242,189.67 and 289,215,445.28

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Solution

The fourth proportional to 530,617,389.80, 732,242,189.67 and 289,215,445.28 is: 399,111,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,617,389.80 : 732,242,189.67 = 289,215,445.28 : x
  2. Step 2: Convert to fraction form
    530,617,389.80/732,242,189.67 = 289,215,445.28/x
  3. Step 3: Cross multiply
    530,617,389.80x = 732,242,189.67 × 289,215,445.28
  4. Step 4: Simplify right side
    530,617,389.80x = 211,775,750,938,211,232
  5. Step 5: Solve for x
    x = 211,775,750,938,211,232/530,617,389.80
  6. Step 6: Final answer
    x = 399,111,968.45

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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.