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Finding the Fourth Proportional to 630,730.53, 870,507.80 and 401,048.38

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Solution

The fourth proportional to 630,730.53, 870,507.80 and 401,048.38 is: 553,510.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,730.53 : 870,507.80 = 401,048.38 : x
  2. Step 2: Convert to fraction form
    630,730.53/870,507.80 = 401,048.38/x
  3. Step 3: Cross multiply
    630,730.53x = 870,507.80 × 401,048.38
  4. Step 4: Simplify right side
    630,730.53x = 349,115,742,967.36
  5. Step 5: Solve for x
    x = 349,115,742,967.36/630,730.53
  6. Step 6: Final answer
    x = 553,510.14

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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.