Home / 788,688.90-1,183,810.95-389,780.10

Finding the Fourth Proportional to 788,688.90, 1,183,810.95 and 389,780.10

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Solution

The fourth proportional to 788,688.90, 1,183,810.95 and 389,780.10 is: 585,054.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,688.90 : 1,183,810.95 = 389,780.10 : x
  2. Step 2: Convert to fraction form
    788,688.90/1,183,810.95 = 389,780.10/x
  3. Step 3: Cross multiply
    788,688.90x = 1,183,810.95 × 389,780.10
  4. Step 4: Simplify right side
    788,688.90x = 461,425,950,472.10
  5. Step 5: Solve for x
    x = 461,425,950,472.10/788,688.90
  6. Step 6: Final answer
    x = 585,054.45

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Double scale
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1.5x scale

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.