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Finding the Fourth Proportional to 556,802.72, 768,402.56 and 302,154.08

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Solution

The fourth proportional to 556,802.72, 768,402.56 and 302,154.08 is: 416,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,802.72 : 768,402.56 = 302,154.08 : x
  2. Step 2: Convert to fraction form
    556,802.72/768,402.56 = 302,154.08/x
  3. Step 3: Cross multiply
    556,802.72x = 768,402.56 × 302,154.08
  4. Step 4: Simplify right side
    556,802.72x = 232,175,968,586.45
  5. Step 5: Solve for x
    x = 232,175,968,586.45/556,802.72
  6. Step 6: Final answer
    x = 416,980.67

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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.